tsconfig.json

{
    "compilerOptions": {
        "allowJs": false,
        "allowSyntheticDefaultImports": false,
        "allowUnreachableCode": false,
        "allowUnusedLabels": false,
        // "alwaysStrict": true, // Covered by `strict` option.
        "diagnostics": false,
        "downlevelIteration": false,
        "forceConsistentCasingInFileNames": true,
        "importHelpers": false,
        "jsx": "preserve",
        "lib": [
            "es2017",
            "esnext.asynciterable",
            "dom"
        ],
        "module": "esnext",
        "moduleResolution": "node",
        "newLine": "lf",
        "noEmitHelpers": false, // see: https://github.com/Microsoft/TypeScript/issues/3364
        "noFallthroughCasesInSwitch": true,
        // "noImplicitAny": true, // Covered by `strict` option.
        "noImplicitReturns": true,
        // "noImplicitThis": true, // Covered by `strict` option.
        "noImplicitUseStrict": false,
        "noUnusedLocals": true,
        "noUnusedParameters": true,
        "outDir": "./__obj/",
        "plugins": [ // for language service plugin.
            {
                "name": "tslint-language-service"
            }
        ],
        "pretty": true,
        "preserveConstEnums": true,
        "removeComments": false,
        "skipLibCheck": true, // To avid the compile error with rxjs.
        "sourceMap": true,
        "strict": true,
        // "strictNullChecks": true, // Covered by `strict` option.
        "suppressImplicitAnyIndexErrors": false,
        "target": "esnext",
        "types": [ // for d.ts which affects global environment.
            "mocha",
            "node"
        ]
    },

    "include": [
        "config/**/*",
        "src/**/*"
    ],

    "exclude": [
        ".git",
        "__dist",
        "__obj",
        "__test_cache",
        "defaults",
        "node_modules",
        "resource",
        "src/server",
        "src/style",
        "tools"
    ]
}